function gauss(){

	var camera = qtre.helper.createTraceCamera("main", true);
	camera.camera.eye = [0, 7, 30];
	camera.camera.target = [0, 7, 0];
	camera.camera.updateView();
	
	var cl = new qtre.ColladaLoader();
	var sceneNode = cl.load("../assets/teapot.dae", new qtre.sceneNode("qt"), camera.camera, function(sceneNode){
//		sceneNode.rotateY(-Math.PI/2);
	});

	/********************************************************
	 * pass2 : post processing - gauss - horizontal
	 * pass3 : post processing - gauss - vertical
	 ******************************************************/
	var gauss = new qtre.postProcessing.gaussBlur(camera.fbo, {
		"blurFactor" : 1
	})
	
	/*******************************************************
	 * ui
	 *******************************************************/
	pushParams({
		"blurFactor" : {
			"value" : 1,
			"materials" : ["PP_0", "PP_1"]
		}
	})
}